Pencil tip and sharpener



Jan. 6, 1942. F. J. B AMBA'CH 2,269,304

PENCIL TIP AND SHARPENER Filed Jan. 3, 1940.

[ 1 nyzb j ,6

g Q Q) g INVENTQR. 171M201 J Bil/(819C194 F? 14 AZ; v A TTORNEY.

Patented Jan. 6, 1942 UNITED STATES PATENT OFFICE PENCIL TIP AND SHARPENER Frank J. Bambach, Newington, Conn. Application January 3, 12540, Serial No. 312,208

6 Claims.

This invention relates to a pencil tip and sharpener and more particularly to a device which is intended to be retained upon the end of a pencil for supporting the end. thereof and sharpening said pencil when desired.

An object of this invention is to provide such a device which may remain permanently. upon the pencil in position for sharpening the same,

whenever desired, by simply rotating it against the end of the pencil and thus eliminating the necessity of having to remove the pencil sharpener from the pencil each time that it is used.

A further object of the invention is to provide such a sharpener which may be constructed in a most economical manner and preferably of a A still further object of the invention is to.

provide a pencil sharpener and tip having novel means for retaining it in position upon the penoil, for preventing the same from becoming displaced while the pencil is being used and also 9 that extends from the tip beyond the end of the said cutting edge and also with a shank or gripping portion N that surrounds the body of .15 single piece of sheet metal so as to render it for supporting the point of the pencil against breakage.

Further objects and advantages of the invention will be clearly understood from the following description and from the vaccompanying drawing in which:

Fig. 1 is a front end view of a pencil tip and sharpener embodying the invention.

Fig. 2 is a side view thereof showing the same attached to a pencil.

Fig. 3 is a longitudinal section view of device in position 01 use upon a pencil.

Fig. 4 is a different side view of the device shown in Fig. 2..

Fig. 5 is a rear. end view of my invention.

Fig. 6 is a plan view'of the blank from whichmy improved sharpener may be constructed.

As illustrated in the drawing, the numeral 5 denotes a pencil of a common form which may be made of wood or other similar material and having the usual lead 6.

This invention provides a metal tip 1 which is conical in shape and has a cutting edge 8 for shaping the end of the pencil to expose the lead 8, as clearly illustrated in Fig. 6 of the drawing.

the

the pencil and closely fits the same to retain the tip thereon. The said shank may be knurled, as shown, in order to provide a gripping surface for rotating the tip against the end of the pencil to sharpen the same.

The said tip is preferably constructed'from a blank II which consists of a single piece of sheet metal having the cutting edge portion 12 and the sleeve portion l3 with an extension 14 thereon; the said blank being substantially triangular in shape and adapted to be formed into the shape of the tip illustrated in Figures 2, 3 and 4 in which a slot is provided between the cutting edge 8 and the edge l5 of the blank for the shavings which are removed from the pencil by the said cutting edge while sharpening said pencil.

In order to providea proper and secure fit of i the tip upon the end of a pencil, for retaining the sleeve 9 provides asupport for the point I 6 of the pencil lead and that the said point projects outside of said sleeve in the same manner that the lead projects through the end of what is commonly called an automatic pencil.

It will be understood that my improved pencil tip and sharpener will provide for sizing the lead of a pencil, regardless of its size, to properly fit in the said sleeve and extend therefrom as the pencil is sharpened and consumed; thus providing a permanent tip for a. pencil which will provide the same advantages for an ordinary wood pencil that are provided by an automatic pencil.

The tip comprising this invention may be simply attached to the end of a pencil and held by the knurled surface of the portion III while the pencil is rotated therein. This will cause the pencil to be sharpened and the lead l6 will be reduced and extended through the. sleeve 9 until it projects for the desired distance from the end of said sleeve. when the said point has been consumed. the pencil is again rotated within the 'tip and the lead will be projected through the The said tip is provided with a sleeve portion 5- sleeve to renew the point. when the pencil has been consumed the tip may be removed and placed ,upon a new pencil.

This invention will, therefore, provide a pencil sharpener which is constantly in position to be used in sharpening a pencil and thus eliminate the possibility of the said tip becoming lost while at the same time rendering the same more conveniently available.

As illustrated in Figures 4 to 6, my improved pencil tip and sharpener may be constructed to comprise a resilient extension 17, in the shank portion H3, which is normally disposed inwardly, as illustrated in Fig. 5, so that when the said tip is attached to the pencil the said extension will resiliently engage the surface thereof and thereby provide a proper fit of the'tip upon the pencil for retaining the same thereon irrespective of slight variations in size between different pencils.

As illustrated in Fig. 6 of the drawing, the blank for the tip and sharpener is notched, as at it, to accommodate the extension I! and permit movement of the said extension while adapting itself to a pencil that is inserted within said tip.

It will be noted, from the illustrations in the drawing, that the cutting edge '8 is disposed spirally along the tapered portion of the tip.

This is for the purpose of providing ease in the sharpening of the pencil since the said edge will shave the end of the pencil with the grain of the wood thereof rather than crosswise to said grain as is now done with the conventional form of sharpeners.

The blank for the improved tip' and sharpener described herein may consist ofa thin sheet metal which is substantially resilient to acco mmodate itself to the surface of the pencil and also to provide spring action for permitting the.

said tip to fit closely to the body of the pencil irrespective of slight variations in size.

I claim: 1. A pencil tip and sharpener of the character described constructed from a single piece of substantially thin sheet metal and comprising a tapered body portion having a slot with a cutting edge in the wall thereof extending longitudinally in said tapered body and partly around the same, a sleeve upon the end of said body portion continuing from said cutting edge, and a gripping portion upon the opposite end .of said body portion comprising a resilient portion extending across the end of said slot for engaging the surface of a pencil to' retain the said tip and sharpener in operative position thereon.

2. A pencil tip and sharpener of the character described comprising a tapered body portion having a-slot with a cutting edge in the wall thereof extending longitudinally in said portion, a sleeve portion continuing from said slot and extending from the end of said bodyportion, and a pencil gripping portion at the opposite end of said body portion including a resilient extension extending across the bottom of said' slot and fitting within a notch in said gripping portion for engaging a pencil to retain said tip and sharpener in position thereon.

3. A pencil tip and sharpener formed from a blank of thin sheet metal comprising a cutting edge, notches adjacent the ends of said cutting edge, and extensions projecting from theside of said blank opposite the saidcutting edge whereby, when the said blank is rolled, it will form a body having a tapered portion with a slot there in having said cutting edge at one side thereof. a sleeve continuing from the said slot and formed by one of said extensions extending across the end of said slot and fitting within the notch opposite the same, and a tubular portion including the other of said extensions within the relative opposite notch to provide a resilient pencil gripping portion.

4. For a pencil tip and sharpener of the character described, a blank of thin sheet material substantially triangular in shape and having a cutting edge at one side thereof terminating in a notch in said blank, and an extension at an opposite side thereof whereby, when the said blank is rolled to form said sharpener, the said extension will fit within said notch and form a sleeve continuing from said cutting edge.

5. For a pencil tip and sharpener device of the character described, a blank of substantially triangular form. having a cutting edge at one side thereof, a notch in a corner of said blank adjacent the said cutting edge, and an extension in the opposite corner of said blank whereby,

, when the said blank is rolled to form said device, the said extension will extend across the end of said cutting edge and fit within said notch to provide a resilient gripping portion adapted to engage a pencil and retain the said device thereon.

6. For a pencil tip and sharpener device of the character described, a substantially triangular blank of thin sheet material having a cutting edge at one side thereof, a notch at each end of said blank whereby, when said blank is rolled to form said device, the extensions will extend across the ends of said cutting edge and fit within said notches; one of said extensions forming a sleeve to receive the tip of a pencil and the other forming a resilient portion adapted to engage the pencil and frictionally retain said sharpener thereon.

' FRANK J. BAMBACH. 

